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Old 03-06-2013, 08:34 PM
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Vortec 6.0/LQ9 Build Idea

Hello everyone. I would like to pick everyones brain. Last year I got my blown 383 put together and running in my boat with a ton of help from this forum. I broke the snout off my crankshaft at the end of last season. I currently have a Chevy small block 383 with a stock block, AFR heads, and a 6-71 blower. Now I need a new crankshaft, and was working with Bob Madera of Marine Kinetics for a custom ground cam shaft. He is telling me that with the amount of boost that i want to make that the main caps are not going to last. Well this made me think about what other options are out there. I have read the the Vortec 6.0 truck engines have really stout bottom ends and the heads from what I can tell flow pretty good as well. I want to do a stock Vortec 6.0 long block with a refresh and forged pistons. Then install the 6-71 blower, custom cam, and run dual 750 carbs and E-85. Will the LQ9/LQ4 bottom end hold up to 700-800 HP?
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